Metallic piston-packing.



,N.s46,66s. PATENTED MAR.12,19o'/'.y

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'METALLIC PISTON PACKING.

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WILLIAM HOEY, OF CHICAGO, ILLINOIS.

METALLIC PlSTON-PACKING.

To 00M whom t may concern:

Be it known that I, WILLIAM HOEY, a citizen of the Il nited States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in MetallicPiston- Packings; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the' art to which it appertains to make and use thesame.

My invention :relates to improvements'in metallic piston-packings, andmore particularly to such packings that are used in steamengines; andits object is to provide a packing that automatically adjusts itself totake up the wear, and maintains its alinement relative to thepiston-rod, and to provide the same With various new and useful featureshereinafter more fully described and particularly pointed out in theclaims, reference being had tothe accompanying drawings, in which-Figure 1 is a vertical section of a steamengine cylinder with myimproved packing applied to the piston-rod and valve-stem; Fig. 2, myimproved packing enlarged and assembled as in Working position; Fig. 3,the same with the parts spaced apart to show the joints, and Fig. 4, asection taken on the line 4 4 of Fig. 2. j

Like numerals refer to like parts in all of the figures,

1 is a cylinder,

3 the stuffing-box, 4 the piston-rod, 5 the piston-head, 11 thepacking-gland, and 12 the gland-tightening bolts,

all of the usual steam-engine construction.

l0 is an internally-tapered bushing, fitted into the stu'l'Iing-box 3With its smallest diameter opening at the inner end next thecylinder-head.

13 is a coiled compression-spring surrounding the piston-rod 4,contacting the inner surface of the gland 11 at one end and the metalball-packing at its other end.

6, 7, 8, and 9 are the respective quarters of the packing-ball as Iprefer to divide the same, and I5 is the axial opening to receive thepiston-rod 4.

My improved packing consists, essentially, of a metal ball made of anysuitable packing metal and having an axial opening to receive thepiston-rod. It is then divided transversely at right angles to the axialopening into halves. These halves are each divided,

one half being divided vertically in the plane Specification of LettersPatent.

Patented March 12, 1'907.

Application filed September 4,1906. Serial No. 333,150.

zontally through the axis. rIhus the ball is divided into quarters, therespective dividinglines being at `right angles to the next abuttingdivision-line. In thus dividing the ball no two seams will coincide topermit leakage through the abutting seams. The outside diameter of thepacking-ball is greater than the smaller opening of theinternally-tapered bushing 10, but is of less diameter than the largeend of its bore, so that when the ball is assembled around thepiston-rod and carried into the stu'lIing-box its greatest transversediameter will contact the wall of the bushing at substantiallyits centerand form a fluidtight joint.

The operation of my device is as Jfollows: The packing is put in placearound the pistonrod and forced into the tapered bushing until it formsa joint between the Walls of the bushing and its greatest transversediameter. Theaction of this tapered sleeve is to cause the several partsto contact the piston-rod and form a fluid-tight joint. The spring 13holds the several parts closely in contact. The tension of this springis adjusted by the bolts l2 through the gland 11. f

I do not wish to be understood as limiting myself to a ball-packingdivided into quarters, as other divisions will accomplish the sameresult; but I prefer to use the smallest possible number of divisions toreduce the number of parts.

What I claim is- 1. In combination with a stufling-box having a sleeveprovided with a tapered bore, a piston-rod, a metal ball surrounding thepiston-rod and divided so that the several parts will contact thepiston-rod and the walls of the stuHing-box to form fluid-tight joints,and

means for holding the several parts of said ball in contact andoperative position.

. 2. In combination with a stuffing-box having a sleeve provided with atapered bore, a piston-rod, a metal ball having an axial opening toreceive the piston-rod, and divided so that when assembled the jointsmeet at right angles, and means for holding the several parts of saidball in contact with the pistonrod, the walls of the stuffing-box andeach other. 3. In combination with a stuffing-box havl ing a sleeveprovided with a tapered bore, a piston-rod centrally located therein,ilmetal l ball divided into four equal parts and-having an axial openingto receive the piston-rod, a

of the axis, the other half being divided hori- IOO TIO

'gland to said stuffing-box, a spring between 4. The combination of astuIing-boX, al sleeve therein having a tapered internal bore, n

a pistonrod centrally located therein, a

metal ball having an axial opening to receive l the piston-rod, saidball being divided into four parts so that all the joints meet at rightl angles, a gland to close the stufling-box, a

.s rin@ surroundinCr the iston-rod and in r Contact with the metal ballat one end and with the gland at the other end, and bolts to hold thegland in place, and adjust the pressure of the spring.

In testimony whereof I afljx my signature 2o in presence of twowitnesses.

WILLIAM HOEY.

Witnesses:

PETER T. BURNS, JAMES J. HARDIN.

